"use client";

import { useState } from "react";
import { useSidebarStore } from "@/lib/stores/sidebar-store";
import { ChatSectionHeader } from "./ChatSectionHeader";
import { ChatListRow } from "./ChatListRow";
import { usePathname } from "next/navigation";
import { cn } from "@/lib/utils";

export interface ChatMessageListProps {
  channelId?: string;
}

export function ChatMessageList({ channelId }: ChatMessageListProps = {}) {
  const pathname = usePathname();
  const isChatRoute = pathname.startsWith("/") && pathname.includes("/chat/");

  if (!isChatRoute) return null;

  const [searchQuery, setSearchQuery] = useState("");
  const [filter, setFilter] = useState("");
  const [expandedSections, setExpandedSections] = useState({
    favorites: true,
    channels: true,
    dms: true,
  });

  const { favorites, channels, dms } = useSidebarStore((state) => ({
    favorites: state.favorites,
    channels: state.channels,
    dms: state.dms,
  }));

  const toggleSection = (section: "favorites" | "channels" | "dms") =>
    setExpandedSections((prev) => ({
      ...prev,
      [section]: !prev[section],
    }));

  // Filter items based on search query
  const filterItems = (items: any[], query: string) => {
    if (!query) return items;
    return items.filter(
      (item) =>
        item.label.toLowerCase().includes(query.toLowerCase()) ||
        item.preview?.toLowerCase().includes(query.toLowerCase())
    );
  };

  const filteredFavorites = filterItems(favorites, searchQuery);
  const filteredChannels = filterItems(channels, searchQuery);
  const filteredDms = filterItems(dms, searchQuery);

  return (
    <div className="chat-message-list flex-1">
      <div className="flex items-center justify-between mb-4">
        <h2 className="text-lg font-semibold text-foreground">
          {channelId ? "Channel Messages" : "Recent Chats"}
        </h2>
        <button
          onClick={() => setExpandedSections((prev) => ({
            ...prev,
            favorites: !prev.favorites,
            channels: !prev.channels,
            dms: !prev.dms,
          }))}
          className="text-sm text-indigo-600 hover:text-indigo-800 font-medium"
        >
          Toggle All Sections
        </button>
      </div>

      <div className="p-2 border-b border-sidebar-border">
        <input
          type="text"
          placeholder="Search chats"
          value={searchQuery}
          onChange={(e) => setSearchQuery(e.target.value)}
          className="w-full p-2 border border-sidebar-rounded bg-background"
        />
        <select
          value={filter}
          onChange={(e) => setFilter(e.target.value)}
          className="w-full p-2 border border-sidebar-rounded bg-background mt-2"
        >
          <option value="">All</option>
          <option value="unread">Unread</option>
          <option value="favorites">Favorites</option>
        </select>
      </div>

      {/* Favorites Section */}
      <ChatSectionHeader
        title="Favorites"
        isExpanded={expandedSections.favorites}
        onToggle={() => toggleSection("favorites")}
        onAdd={() => console.log("Add to favorites")}
        onMore={() => console.log("More options for favorites")}
      />
      {expandedSections.favorites && (
        <div className="px-2 space-y-1">
          {filteredFavorites.map((item) => (
            <ChatListRow
              key={item.id}
              label={item.label}
              type={item.type}
              id={item.id}
              count={item.count}
              preview={item.preview}
            />
          ))}
        </div>
      )}

      {/* Channels Section */}
      <ChatSectionHeader
        title="Channels"
        isExpanded={expandedSections.channels}
        onToggle={() => toggleSection("channels")}
        onAdd={() => console.log("Add channel")}
        onMore={() => console.log("More options for channels")}
      />
      {expandedSections.channels && (
        <div className="px-2 space-y-1">
          {filteredChannels.map((item) => (
            <ChatListRow
              key={item.id}
              label={item.label}
              type={item.type}
              id={item.id}
              count={item.count}
              preview={item.preview}
            />
          ))}
        </div>
      )}

      {/* DMs Section */}
      <ChatSectionHeader
        title="DMs"
        isExpanded={expandedSections.dms}
        onToggle={() => toggleSection("dms")}
        onAdd={() => console.log("Add DM")}
        onMore={() => console.log("More options for DMs")}
      />
      {expandedSections.dms && (
        <div className="px-2 space-y-1">
          {filteredDms.map((item) => (
            <ChatListRow
              key={item.id}
              label={item.label}
              type={item.type}
              id={item.id}
              count={item.count}
              preview={item.preview}
            />
          ))}
        </div>
      )}
    </div>
  );
}